Scraping-machine for closed filters.



110.840,104. j PATBNTED JAN.Y1,1907.

H. W.BLA1SDELL.

SGRAPING MAGHINE FOR CLOSED FILTERS. APPLIG'ATION FILED Nov. 1e. 1904.

.4 SHEETS-SHEET 1.

W/ TNE SSE S 1HE Nnmzls PETEks co., wAsHmofaN, L:A c.

MANO/5W Y PATENTBDIJAN. 1, 1907.

H. W.IBLAI'SDBLL. v@GRMING MACHINE -PoR CLOSED FILTERS.

APPLICATION FILED NOV. 16. 1904.-

4 SHEETS-SHEET 2 rHs Namels PErERs cu., wlxsulncfon, n. c.

H. W. BLAIs-DBLL.

SGRA'PING MACHINE PoR cLosED FILTERS. APPLICATION FILED NOVIB. 1904.

'J3 .M di? J2- W/mfssssf 'A Y /vv A l' @nf/QQ y una@ M i nu: Molins niksca., wasnmarulne.

PATENTED JAN. l, 1907.

4 SHEETS-SHEET 3.

No. 840,104. l PATBNTED JAN. 1, 1907.

H. W. BLAISDELL.

I SGRPING MAGHINLv FOR CLOSED FILTERS. PPLioATIoN FILED Nov.1e. 1904.

l SHEETS-SHEET 4.

' WITNESS 0 I l Winn-m y* rn: Helius Erl-arca.. HlAsnlNm-qrl. D. c.

UNITED sTATEs .PATENT oEEIoE.

HIRAM W. BLAISDELL, OF LOS ANGELES, CALIFORNIA.

SCRAPING-MACHINE FOR CLOSED FILTERS.

To a/ZZ whom t may concern:

Be it known that I, HiRAM W. BLArsDELL, a citizen ofthe United States,residing at Los Angeles, in t-he county of Los Angeles and St ate ofCalifornia, have inventedl certain new and useful Improvements inScraping- Machines for Closed Filters; and I do hereby declare thefollowing to be a full, clear, and exact description of the. invention,such as will enable others skilled in the art to which it ap pertains tomalreand use the same.

This invention relates to machines construct ed to operateupon coveredor obstructed filter-beds or filtration-works, and -particularly tomachines for removing a portion of the surface of slow sand filters; andsome of the objects of the invention are to provide a machine of thischaracter which will be simple and. cheap in construction and eiicientfor the purpose intended.

Another object of the invention is to provide a machine constructed totravel beneath the covering or roof of covered or obstructed filter-bedsand to be capable of movement over tne entire area ofthe filter-beds.

A further object of the invention is to provide a machine constructed tooperate upon covered filter-beds without exerting injurious or damagingpressure thereon and one Wherein the amount of such pressure can beregulated.

. It is also an object of the invention to provide a machine for coveredor obstructed filter-beds 'constructed to remove a portion of thefiltering material and transfer the same to any desired place ofdeposit.

Still another object of the .invention is to provide a machine forremoving material from partially or entirely' Covered filter-bedswherein fluid is supplied to the machine during the operation thereof tofacilitatexrjsuch removal. Another object of the invention is to providea machine for removing material from covered filter-beds constructed tooperate between or around the supports for the covering of thefilter-bed or other obstructions, so that the entire area orfiltering-surface of the filter-bed lcan be operated upon.

With these and other objects in view the invention consists.essentially, in the construction, combination7 and arrangement of partssubstantially as more fully described in the following specification,and as illustrated Specication of Letters Patent. Application nedNovember 16,1904. serai No. 233,004..

Patented Jan. 1, 1907.

in the accompanying drawings, forming part of this application, inwhich- Figure l is a top plan view of the scrapingmachine in operativeposition, showing the covering of the filter-bed removed. Fig. 2 is afront elevational view of the same, illustrating the parts extended.Fig. 3 is a view similar to Fig. 2, showing the parts retracted; andFig. 4 is a longitudinal central sectional View thereof.

Similar characters of reference designate corresponding parts throughoutthe several views.

This invention is particularly designed and constructed for use uponfiltration-works or filter-beds which are partially or entirely coveredor roofed over or which are constructed with obstructions in the form ofcolumns, buttresses, or otherwise, by reason of which machinery capableof use upon open filter-beds cannot be `employed and the transporting ortreating of the filtering material is required to be done by hand ormanual labor.

Whenever theyieldof filtration-works or filter-beds is diminished tosuch a point or degree that enough water cannot be obtained therefrom,it is evident that the surface thereof has become clogged, and it thenbecomes necessary to scrape the filter-bed or remove'the upper portionof the same, which is done by laborers, using shovels of extra width andlong handles, who remove the surface portion of the filter-beds, varyingfrom one-half to one inch in thickness, the filtering material removedbeing thrown into piles a convenient distance apart, whereupon boardsare placed upon the'scraped area or surface of the filter-beds, and thefiltering material so piled up is shoveled into wheelbarrows and wheeledaway to the place where the foul or contaminated material is to betreated or washed, thus' requiring the expenditure of a great amount oftime and money to scrape a filter-bed, besides injuring the same byreason of the weight or pressure exerted thereon during the foregoinglengthy and tedious operation.

Although this invention relates particularly to use upon covered orobstructed-filtration-works or filter-beds and is so shown and describedherein, yet it is in no'manner `confined or limited thereto, and theapplication of, this invention herein shown and described is `onlytypical of one of the many y uses of which the same is capable.

Referring tothe drawings, and particularly to thelconstructionillustrated in Figs. 2 to 4 thereof, the referencecharacter 1 designates the covering or roofof a filtrationworks or slowsand filter-bed, which covering is preferably of the groined-arch type,supported by columns or vpiers 2, provided with brackets or supports 3to receive tracks or Ways 4, and the latter may be provided withintermediate supports 5, suspended from the roof 1 by rods or hangers 6,substantially as shown in said figures. Atraveling structure or frame 7of any suitable .f construction is preferably provided withsupporting-wheels 8, adapted to travel upon the tracks 4, which mayextend longitudinally of each bay or gallery of the filtration-works orfilter-beds, as will be understood by those 'l skilled in the art towhich this invention appertains.

An electric motor 9, Figs. 1 and 4, may be suitably mounted upon thetraveling structure 7 and may be provided with suitable connections witha source of electrical supply," and the drive-shaft of this motor orother driving apparatus may be provided with a worm 10, engaging aworm-wheel 11 on a propelling-shaft 12, desirably provided withsprocket-wheels 13, chained to sprocketwheels 14 upon the other end` ofthe short shafts carrying lthe forward supportingwheels 8, substantiallyas shown.

Itfmay be found desirable to advance the f machine at a slow rate ofspeed and retreat the same at a fast rate of speed. Therefore a set ofdifferential gears may be employed for this purpose, a large and alsmall gear 15 and 16, respectively, being secured upon the profpelling-shaft 12 and a large and a small gear 17 and 18, respectively,being mounted upon acounter-shaft 19.

In the rear portion of the traveling structureor frame 7 may berevolubly mounted in suitable bearings 22, Fig. 4, hollow shafts 23vofthe hose 27 is desirably provided with a connection 31, movablyattached to one end ofthe hollow shaft 23, while the hose 28 is providedwith a connection 32 with the hollow shaft 24, as will be readilyunderstood.

.- The other end of the hose 28 is connected with the source offluid-supply, preferably under-pressure, so that fluid is thus deliveredto the `machine through the hose 28, connecward direction, it will beunderstood that the hose 27 and 28 will be unwound or paid out until themachine shall have reached the end of the bay or gallery wherein it isoperating,

whereupon the travel of the machine will be' reversed and the hose 27`and 28 will preferably be rewound upon the reels 25 and 26 by means oflarge gear-wheels 37, formed on or connected with the reels`25 and 26,meshing with suitable idlers (not shown) driven by pinions'38 on shafts39, carrying pulleys 40, connected by belts 41 with pulleys 42 on theshafts of the rear supporting-wheels 8, and take-up or tensionizingdevices 43 are preferably provided for the belts 41., so that they maybesla'cked up or loosened when the machine is traveling in a forwarddirection to permit the reels 25 and 26 to unwind by the pull on thehose 27 and 28, but the take-up devices 43 are used to tighten the belts41 to e'ect the rotation .of Vthe reels 25 and 26 when the machine istraveling in a rearward direction, thereby rewinding the hose 27 and 28thereon. f

In or upon the forward portion of the machine is preferably movablymounted a frame or support 44 of suitable construction and material,desirably provided with small wheels or rollers 45, adapted to travelin-or upon channel irons or ways 46 in the forward portion of thetraveling structure or frame 7, and ropes or chains 47 are preferablyattached to the movable frame 44 and pass up over sheaves 48 and 49 andare connected with counterweights 50, whereby the pressure exerted bythe movable frame 44 upon the filter-bed can be regulated. On theforward part of frame 44 is fastened a box 51 or other suitable means,adapted to bear upon the filter-bed and prov ided with a curved shoe 52,adapted to slide over the surface of the filter-bed. f

In bearings connected with the lower portion of the movable frame 44 ispreferably revolubly mounted a horizontal shaft 53. desirably providedwith helical vanes or flights 54, constructed to remove the upper orsurface portion of the filter-bed or other area and progress the removedmaterial toward the middle of the machine,where it is preferably takenup by a bucket elevator 55 or other device, desirably passing around anddriving a pulley or drum 56, secured upon the flight-shaft 53,substantially as shown.

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An electric motor 57,' having suitable connection with a source ofelectrical supply, may be mounted in orl upon the movable frame ,44, andthe drive-shaft of the motor by a belt 66 with a pulley 67 on ahorizontal shaft 68, as will be readily understood.

Upon the shaft 68 are feathered pulleys 69, connected by a belt withpulleys 71 on the Wing or auxiliary `conveyer 72, revolubly mounted insliding bearings 73, preferably connected-with the piston-rods 74 ofhydraulic cylinders 75, having suitable fiuid connections whereby theauxiliary conveyers may be extended, as shown in Figs. 1 and 2, orretracted, as illustrated in Fig. 3 of the drawings, in order that thesurface between or in line with the piers'2 may be scrapedsimultaneously with the surface in the bay or gallery wherein themachine is operated.

, lf found desirable in practice, a chute or guideway 76 may be suitablymounted in the movable frame, constructed to receive the l materialraised bythe elevator and discharge the same into the receiver 34, and afolding platform may likewise be provided at the rear of the machine forthe operator thereof.

The operation of the invention will be readily understood from theforegoing description when taken in connection with the accompanyingdrawings and the following explanation thereof. The machine is placedinoperating position, preferably at one end of a bay or gallery of acoveredslow sand lter-bed, and the outlet and .inlet yhose 27 and 28,respectively, are connected with the outlet-pipe 30 and the source offluid-supply, whereupon the propelling-motor-9 is started,therebyrotating the worm 10, which drives lthe worm-wheel 11 on thepropellingshaft 12, carrying the sprocket-wheels 13, chained to thesprocket-wheels 14 upon the shafts of the forward supporting-wheels 8 ofthe machine, thereby imparting motion thereto at a slow rate of speed.The actuatingmotor 57 is likewise started, thereby actuating thedriving-pinion 58 on the driveshaft thereof, which pinion is belted tothe band-wheel 59 on the shaft 60, also'carriyng the pinion 61, drivingthe large gear-wheel 62 on the shaft ,63 of the driving-pulley 64 of theelevator 55, the tail-pulley whereof is preferablykeyed to the mainconveyer-shaft 53, whereby the latter 'is revolved by the travel of theelevator, as will be readily understood. The shaft 63 of thedriving-pulley of the elevator carries a belt-pulley 65, connected by abelt 66 with a belt-pulley 67 on a horizontal actuating-shaft 68,provided with pulleys 69, belted-to pulleys 7l on the shafts 72 of thewingconveyers to effect the rotation of the latter, and thewing-conveyers are extended, as shown in Figs. 1 and 2, and retracted,as illustrated in Fig. 3, by means of the piston-rods 74 of thehydraulic cylinders 7 5,/which are provided with suitable operatingconnections.

By means of the construction just described the main conveyer 53, withits oppositely-inclined flights 54, is made to scrape or remove `theupper surface of the filter-bed toward the middle of the machine, whereit is deliveredto the buckets of the elevator and raised thereby intothe chute 76, to be thereby directed into the receiver 34, from whichthe material is discharged in the following manner.

.F luid isconveyed to the machine under pressure from a source of fluidsupply through the inlet-hose 28, the hollow shaft 24, the connection 33to the receiver 34 or hydraulic sand-ejector, and the liquid thusconveyed passes out of said receiver or ejector under suHicient pressureto carry with it the foul filtering material and impregnated orcontaminated fluid which has been discharged into the receiver, as willbe readily understood by those skilled in the art to which thisinvention appertains. From the receiver or the ejector the foul materialand contaminated fluid passes through the outlet connection 36, thehollow shaft 23, and the outlet-hose 27 to the outlet-pipe 30, whichconveys the same to the desired place of discharge or deposit. .i

lt is to be understood that this invention isnot limited to the specificmanner of propelling the traveling structure or operating Ithe elevatoror driving the main and auxiliary conveyers from the elevator, orextending orvretracting the auxiliary conveyers, and the mechanismillustrated and described therefor is only typical, being capable ofmodification and change without departing from the character of theinvention, and all such other changes in and modifications of theinvention may be made in practice as come within the spirit and scope ofthe invention.

1. A covered filter provided with supporting means beneath the cover, amachine constructed to travel thereon, means carried by said machine forremoving a portion of the filtering material and mechanism for operatingthe parts.

2. A covered filter provided with suspendingmeans beneath the cover, atraveling structure constructed to move in engagement with said means,mechanism supported by said structure for removing a portion of thefiltering material and instrumentalities for operating the parts.

3. A covered filter provided with supporting means beneath the cover, atraveling structure suspended therefrom; mechanism TOO terial andinstrumentalities for operating the parts.

5. A filter provided with a covering supported by piers, supportingmeansl beneath the covering, a machine constructed to travel on saidsupporting means beneath said covering and between said piers and toremove the filtering material and. mechanism for operating the parts.

6. A machine constructed to travel on fixed supports within closedfilters provided with means for removing the filtering material from thefilter, devices for effecting the discharge of the material so removedand mechanism for operating the parts.

7. A machine constructed to operate upon fixed supports within coveredfilters provided with devices for scraping a predetermined portion ofthe filtering material from the filter and means for operating theparts.

8. A machine constructed to operate from fixed supports within coveredfilters provided with means for scraping the surface of the filtermechanism for removing the scraped filtering material andinstrumentalities for operating the parts.

9. A covered filter provided with; suspending means beneath the cover,mechanism supported therefrom constructed to scrape the surface of thefilter and instrumentalities for operating the parts.

10. A covered filter provided with supports beneath the cover, meansconstructed to travel on said supports within the covering of the filterand adapted to scrape the filter and instrumentalities for operating theparts.

11. A machine constructed to operate from fixed supports within thecovering of closed filters provided with means for removing apredetermined portion of the filtering `material, a device constructedto contact with the surface of the filter to regulate the depth of thematerial removed and mechanism. for operating the parts.

12. A machine constructed to operate from fixed supports within coveredfilters provided with means for scraping the filter, a shoe carried bysaid means constructed to slide over the filter-surface to regulate thecut thereof and mechanism to operate the parts.

13. A machine constructed to operate from fixed supports within coveredfilters provided with means for scraping the filter, an adjustable shoecarried by said means constructed to slide over the filter-surface toregulate the cut thereof and mechanism to operate the parts.

14. A covered filter provided with supports beneath the cover, scrapingmeans constructed to engage said supports, a device carried by saidmeans to regulate the depth of the cut and mechanism for operating theparts.

15. A covered filter provided with supports beneath the cover, scrapingmeans constructed to engage said supports, an adjustable shoe carried bysaid means to regulate the depth of the cut and mechanism for operatingthe parts.

16. A machine for operating from fixed supports within covered filtersprovided with means for removing a portion of the' filtering material,apparatus for eecting the discharge of the material and mechanism foroperating the parts.

17. A machine for operating from fixed supports within covered filtersprovided with means for effecting the removal of a portion of thefiltering material during the travel of the machine over the surface ofthe filter, apparatus for effecting during said travel the discharge ofthe material so removed and mechanism for operating the parts.

18. A machine for operating from fixed supports within covered filterspro-vided with means for removing a portion of the filtering material,means for discharging the removed material, a fiuid-vehicle to coperatewith.

said last-named means, connections between said means and the source of'fluid-supply and place of deposit of the removed material and mechanismfor operating the parts.

19. A machine for operating from fixed supports within covered filtersprovided with means for removing a portion of the filtering material, afluid-vehicle to coperate with said means, connections between thesource of fiuid-supply and place of deposit adapted to effect thecontinuous discharge of the removed material throughout the travel ofsaid means and mechanism for operating the parts.

20. A machine for operating from fixed supports within covered filtersprovidedvwith means for removing a portion of the ltering material,discharging apparatus fixed in relation to vthe filter andconnectionscarried by said means constructed to permit the travel of said meanswhile effectingl the continuous discharge of the removed material.

21. A machine for operating upon covered filtersprovided with means forremoving a portion of the filtering material, a fluid-vehicle toco-perate with said means, flexible connections between said means andthe sourceof fiuid-supply and between said means and the place ofdischarge of the removed material and mechanism for operating the parts.

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22. A machine for operating upon covered ilters provided with means forremoving a portion of the filtering material, a discharging device, aiiuid-vehicle to cooperate with said device, liexible connectionsbetween said device and both the source of iiuid-supply and place ofdischarge of the removed material, apparatus for supporting saidconnections and mechanism for operating the parts.

23. A machine for operating upon filterbeds provided with means forremoving a portion of the filtering material, a discharging device, afluid-vehicle to coperate with said device, reels, induction andeduction hose on said reels respectively connected with said device andthe source of fluid-supply and place of deposit of said removed materialand mechanism for operating the parts.

24. A machine for operating upon ilterbeds provided with means forremoving a portion of the filtering material, a discharging device,reels, hose thereon connected with said device, apparatus to operatesaid reels to wind or unwind said hose during the travel of the machineand mechanism for operating the parts.

25. A machine for operating upon lterbeds provided with devices forremoving the iiltering material having a compound motion in the sameplane and mechanism for operating the parts.

26. A machine for operating upon iilterbeds provided with conveyers forremoving 'the surface of the iilter-bed, said conveyers having a doublemovement in the same plane in relation to the machine and mechanism foroperating theparts.

27. A machine of the character described provided with conveyers, meansfor imparting arotary and a reciprocating motion thereto in the sameplane whereby the eiiiciency of the machine is increased and mechanismfor operating the parts.

28. A machine of the character described provided with a main conveyer,auxiliary conveyers and mechanism for operating the arts. p 29. Amachine of the character described provided with a main device forremoving material, extensible and retractable auxiliary devices andmechanism for 'operating the parts.

30. A machine of thel character described provided with a main conveyer,extensible and retractable conveyers, means for eecting such extensionand retraction and mechanism for operating the parts.

31. A machine of the character. described providedwith a main scraper,auxiliaryscrapers, means for regulating the cut of the scrapers andmechanism for operating the partsjrr#i 32. A machine of the characterdescribed providedwith a main scraper, auxiliary scrapers, adjustablemeans for automatically regulating the cut of saidscrapersgandkmechanism for operating the parts, :lY

38. A machine of the character described provided with a main scraper,auxiliaryscrapers, an elevator takingv the material therefrom, apparatusto discharge the elevated material and mechanism for operating theparts. l.

34. A machine of the character described provided with a main conveyer,auxiliary conveyers, an elevator driving said conveyers, means fordischarging the elevated matesupporting part of said apparatus operatedby the travel of the machine and mechanism for propelling the machineand for operating the elevator.

37 A covered lter provided with supporting means beneath the cover,mechanism supported thereby, an ejector carried by said mechanism andinstrumentalities for operating the parts.

'38. A iilter provided with a covering supported by piers, means carriedby said piers beneath 'said covering to receive a machine, a machineconstructed to engage said means to eiiect the removal of material andmechanism for operating the parts.

39. A iilter provided with a coverin having suitable supports, tracksconnecte with said supports beneath said covering, a scraping-machineconstructed to travel on said tracks and mechanism for op erating theparts.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, at Los Angeles, in the county ofLos Angeles, State of California, this 2d day of November, 1904.

HIRAM W. BLAISDELL.

Witnesses:

H. T. MoRRow, MIGNON FORD.

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